PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-20:12:40
G01     313.3          27.4               10.7 +/-    1.75      19.8 +/-    1.75  0.090 / 0.150
G10     96.3           46.4               12.0 +/-    0.69      15.9 +/-    0.69  0.100 / 0.190
G11     291.7          27.1                9.6 +/-    1.47      17.9 +/-    1.47  0.080 / 0.180
G14     336.1          70.0               11.3 +/-    0.99      11.9 +/-    0.99  0.100 / 0.180
G18     112.0          19.0               13.2 +/-    1.06      29.8 +/-    1.06  0.140 / 0.340
G22     306.2          18.8               10.5 +/-    1.69      23.9 +/-    1.69  0.130 / 0.250
G25     89.9           13.8               13.4 +/-    1.41      34.3 +/-    1.41  0.030 / 0.040
G31     174.7          54.1               14.4 +/-    1.05      17.4 +/-    1.05  0.030 / 0.050
G32     24.9           59.3               11.1 +/-    0.62      12.7 +/-    0.62  0.030 / 0.030