PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-18:42:50
G10     297.2          51.4               11.5 +/-    2.52      14.2 +/-    2.52  0.060 / 0.070
G14     210.3          12.9               14.6 +/-    2.05      38.0 +/-    2.05  0.090 / 0.080
G15     45.9           26.8               10.8 +/-    2.01      20.2 +/-    2.01  0.040 / 0.030
G18     2.7            65.7               11.6 +/-    0.59      12.6 +/-    0.59  0.030 / 0.030
G20     71.2           19.1               12.3 +/-    1.38      27.7 +/-    1.38  0.070 / 0.100
G21     104.3          69.9               14.6 +/-    0.76      15.4 +/-    0.76  0.060 / 0.100
G24     98.5           26.7               14.9 +/-    1.56      28.0 +/-    1.56  0.080 / 0.180
G27     298.5          35.2               12.1 +/-    1.14      19.1 +/-    1.14  0.070 / 0.200
G32     211.4          30.8               14.1 +/-    2.59      24.2 +/-    2.59  0.080 / 0.370