PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/04-17:12:50
G01     74.8           32.8               11.3 +/-    0.44      18.7 +/-    0.44  0.060 / 0.110
G07     134.8          29.4               12.3 +/-    0.87      21.8 +/-    0.87  0.060 / 0.130
G11     55.8           33.3               10.2 +/-    0.76      16.7 +/-    0.76  0.210 / 0.290
G13     278.6          38.7               13.2 +/-    1.23      19.6 +/-    1.23  0.060 / 0.090
G15     305.3          14.7                9.9 +/-    2.76      24.8 +/-    2.76  0.040 / 0.060
G17     225.5          64.4               13.5 +/-    0.75      14.8 +/-    0.75  0.040 / 0.060
G18     51.0           19.2               10.0 +/-    0.71      22.4 +/-    0.71  0.060 / 0.110
G19     220.5          39.2               14.3 +/-    1.44      21.1 +/-    1.44  0.070 / 0.120
G28     1.4            61.3               10.8 +/-    0.38      12.1 +/-    0.38  0.080 / 0.260
G30     131.4          62.0               12.7 +/-    0.61      14.2 +/-    0.61  0.070 / 0.210