PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-17:12:40
G01     39.7           14.5                7.6 +/-    2.71      19.2 +/-    2.71  0.040 / 0.050
G06     174.2          40.3               11.9 +/-    1.56      17.2 +/-    1.56  0.040 / 0.050
G13     235.1          21.4               11.2 +/-    1.67      23.8 +/-    1.67  0.200 / 0.310
G15     268.9          11.6               10.5 +/-    1.76      28.3 +/-    1.76  0.200 / 0.400
G17     0.0            70.5                9.8 +/-    0.89      10.3 +/-    0.89  0.030 / 0.040
G19     283.8          70.7                9.4 +/-    1.01       9.9 +/-    1.01  0.030 / 0.030
G24     315.8          20.3                7.6 +/-    2.45      16.5 +/-    2.45  0.080 / 0.260
G28     67.9           50.3                9.5 +/-    1.19      12.0 +/-    1.19  0.130 / 0.290
G30     154.3          23.8               11.3 +/-    0.97      22.7 +/-    0.97  0.040 / 0.030