PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-09:43:10
G01     73.1           32.3                5.8 +/-    1.22       9.6 +/-    1.22  0.050 / 0.080
G07     135.0          32.5                6.2 +/-    0.56      10.3 +/-    0.56  0.060 / 0.080
G11     56.6           34.9                4.7 +/-    2.07       7.5 +/-    2.07  0.030 / 0.050
G13     277.4          39.0                5.6 +/-    1.73       8.3 +/-    1.73  0.050 / 0.040
G15     305.6          14.3                2.3 +/-    2.18       5.8 +/-    2.18  0.080 / 0.070
G17     225.8          64.0                7.5 +/-    1.16       8.2 +/-    1.16  0.080 / 0.080
G18     51.0           19.5                3.9 +/-    2.30       8.7 +/-    2.30  0.100 / 0.280
G19     220.7          41.0                6.7 +/-    1.74       9.6 +/-    1.74  0.090 / 0.300
G28     358.1          61.5                4.6 +/-    0.70       5.1 +/-    0.70  0.030 / 0.020
G30     131.8          67.1                6.9 +/-    0.69       7.4 +/-    0.69  0.030 / 0.030