PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-21:57:50
G01     303.3          35.5               11.2 +/-    2.00      17.6 +/-    2.00  0.110 / 0.130
G10     110.0          37.7               11.4 +/-    0.67      17.3 +/-    0.67  0.070 / 0.090
G11     277.3          28.4               11.5 +/-    1.61      20.8 +/-    1.61  0.080 / 0.090
G14     6.9            64.6               10.4 +/-    0.37      11.3 +/-    0.37  0.100 / 0.090
G18     120.1          10.2               14.7 +/-    1.79      40.9 +/-    1.79  0.030 / 0.020
G22     310.8          28.2                9.6 +/-    2.56      17.5 +/-    2.56  0.030 / 0.030
G25     77.2           17.5               12.2 +/-    1.61      28.5 +/-    1.61  0.110 / 0.140
G31     168.9          67.3               11.7 +/-    0.20      12.6 +/-    0.20  0.120 / 0.120
G32     38.8           50.9                9.4 +/-    2.00      11.8 +/-    2.00  0.030 / 0.040