PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-13:12:50
G01     89.6           31.2                5.2 +/-    1.24       8.9 +/-    1.24  0.040 / 0.060
G07     125.4          42.4                6.8 +/-    0.64       9.5 +/-    0.64  0.040 / 0.050
G08     42.3           10.9                6.0 +/-    2.45      16.4 +/-    2.45  0.030 / 0.060
G11     68.9           40.9                7.5 +/-    1.56      10.8 +/-    1.56  0.030 / 0.060
G13     294.3          37.0                8.1 +/-    4.16      12.5 +/-    4.16  0.050 / 0.060
G17     213.6          49.3                9.3 +/-    0.80      11.8 +/-    0.80  0.040 / 0.070
G18     63.3           23.7                5.9 +/-    1.57      11.9 +/-    1.57  0.170 / 0.150
G19     213.4          28.0                7.5 +/-    1.62      13.7 +/-    1.62  0.110 / 0.160
G28     334.4          61.2                5.4 +/-    0.39       6.1 +/-    0.39  0.180 / 0.290
G30     104.4          75.8                8.0 +/-    0.82       8.2 +/-    0.82  0.130 / 0.290