PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-00:57:30
G02     204.0          40.7               14.8 +/-    0.85      21.3 +/-    0.85  0.210 / 0.140
G06     152.9          73.3               12.4 +/-    0.76      12.8 +/-    0.76  0.100 / 0.120
G12     309.8          18.0               10.2 +/-    1.72      23.5 +/-    1.72  0.080 / 0.110
G17     36.4           49.3                9.6 +/-    1.25      12.2 +/-    1.25  0.090 / 0.150
G19     9.0            62.9               10.5 +/-    0.46      11.6 +/-    0.46  0.040 / 0.030
G24     293.4          39.7                9.8 +/-    7.87      14.3 +/-    7.87  0.030 / 0.020
G28     106.8          27.9               11.9 +/-    1.69      21.7 +/-    1.69  0.130 / 0.120