PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-15:58:10
G01     74.8           32.7                7.0 +/-    1.06      11.5 +/-    1.06  0.040 / 0.050
G07     134.6          30.2                9.3 +/-    0.74      16.2 +/-    0.74  0.040 / 0.050
G11     56.1           33.6                6.4 +/-    0.95      10.5 +/-    0.95  0.070 / 0.130
G13     278.7          38.8                7.1 +/-    1.90      10.5 +/-    1.90  0.060 / 0.120
G15     305.6          14.5                5.9 +/-    1.86      14.9 +/-    1.86  0.040 / 0.090
G17     225.2          63.4               10.5 +/-    1.28      11.6 +/-    1.28  0.040 / 0.100
G18     51.2           19.4                7.2 +/-    1.66      16.2 +/-    1.66  0.070 / 0.100
G19     220.4          39.3                9.7 +/-    1.47      14.2 +/-    1.47  0.070 / 0.110
G28     0.4            61.3                8.3 +/-    1.00       9.3 +/-    1.00  0.030 / 0.040
G30     131.1          63.1                9.0 +/-    0.75      10.0 +/-    0.75  0.030 / 0.060