PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-00:13:00
G01     43.1           19.0                9.0 +/-    3.25      20.3 +/-    3.25  0.170 / 0.220
G06     176.2          35.0               11.0 +/-    1.49      17.5 +/-    1.49  0.160 / 0.240
G13     241.3          24.3               12.0 +/-    0.99      23.9 +/-    0.99  0.020 / 0.030
G15     273.7          13.5                9.7 +/-    1.15      25.1 +/-    1.15  0.020 / 0.020
G17     340.7          74.4                9.5 +/-    0.34       9.8 +/-    0.34  0.040 / 0.040
G19     267.4          66.9                9.8 +/-    0.84      10.5 +/-    0.84  0.030 / 0.030
G24     317.7          16.0                8.7 +/-    3.68      21.2 +/-    3.68  0.040 / 0.050
G28     67.5           48.2                8.8 +/-    1.70      11.3 +/-    1.70  0.040 / 0.050
G30     152.8          28.6               12.5 +/-    1.56      22.5 +/-    1.56  0.060 / 0.090