PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-14:58:00
G01     105.2          25.7                9.6 +/-    1.32      18.4 +/-    1.32  0.030 / 0.040
G07     110.9          52.9               10.6 +/-    0.96      12.9 +/-    0.96  0.030 / 0.060
G08     41.9           21.0                8.3 +/-    0.84      17.9 +/-    0.84  0.040 / 0.060
G09     175.3          14.0               12.2 +/-    0.83      31.1 +/-    0.83  0.040 / 0.070
G11     86.7           43.5               10.2 +/-    0.66      14.1 +/-    0.66  0.050 / 0.110
G13     308.3          30.3               11.1 +/-    1.66      19.3 +/-    1.66  0.040 / 0.100
G17     205.9          36.9               11.3 +/-    1.77      17.4 +/-    1.77  0.070 / 0.140
G18     77.9           24.1                9.3 +/-    0.80      18.5 +/-    0.80  0.070 / 0.130
G28     308.8          58.9               10.1 +/-    0.98      11.6 +/-    0.98  0.050 / 0.080
G30     42.3           78.8                9.9 +/-    0.41      10.1 +/-    0.41  0.050 / 0.090