PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-14:42:30
G03     231.7          67.9               11.3 +/-    0.71      12.1 +/-    0.71  0.030 / 0.040
G09     303.2          17.6                8.2 +/-    1.28      19.0 +/-    1.28  0.030 / 0.040
G14     98.5           17.7                8.1 +/-    1.67      18.8 +/-    1.67  0.090 / 0.220
G16     124.0          59.3               10.8 +/-    0.56      12.3 +/-    0.56  0.120 / 0.270
G22     188.2          51.7               12.1 +/-    0.60      14.9 +/-    0.60  0.050 / 0.070
G23     323.3          53.2                9.6 +/-    0.44      11.6 +/-    0.44  0.040 / 0.050
G26     67.1           50.3                8.6 +/-    0.89      10.8 +/-    0.89  0.050 / 0.060
G31     52.8           17.8                6.5 +/-    3.88      15.2 +/-    3.88  0.040 / 0.060