PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-14:58:00
G01     92.8           30.5                9.7 +/-    1.28      16.8 +/-    1.28  0.040 / 0.060
G07     123.3          43.7               10.2 +/-    0.30      14.1 +/-    0.30  0.050 / 0.060
G08     42.0           11.8                7.5 +/-    4.47      20.0 +/-    4.47  0.040 / 0.070
G11     71.6           41.5                8.7 +/-    0.86      12.4 +/-    0.86  0.040 / 0.080
G13     297.3          36.0               10.2 +/-    2.68      15.8 +/-    2.68  0.030 / 0.050
G17     211.7          48.2               10.9 +/-    0.60      14.1 +/-    0.60  0.040 / 0.060
G18     65.7           24.0                8.4 +/-    0.55      16.8 +/-    0.55  0.050 / 0.050
G19     212.4          25.4                9.6 +/-    1.52      18.6 +/-    1.52  0.040 / 0.050
G28     330.4          61.1                7.5 +/-    0.59       8.4 +/-    0.59  0.070 / 0.130
G30     98.3           76.2                9.1 +/-    0.26       9.3 +/-    0.26  0.090 / 0.130