PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-17:27:40
G03     211.9          60.7               11.5 +/-    0.93      13.0 +/-    0.93  0.180 / 0.300
G07     253.1          11.6                4.0 +/-   22.75      10.8 +/-   22.75  0.190 / 0.320
G09     307.5          23.2               11.3 +/-    2.01      23.0 +/-    2.01  0.040 / 0.050
G14     105.2          11.4               12.0 +/-    2.02      32.6 +/-    2.02  0.050 / 0.060
G16     108.3          63.6               14.2 +/-    0.76      15.6 +/-    0.76  0.030 / 0.030
G22     187.6          45.0               12.4 +/-    1.14      16.7 +/-    1.14  0.030 / 0.040
G23     328.5          57.9               11.9 +/-    0.48      13.8 +/-    0.48  0.060 / 0.150
G31     56.9           12.6                7.4 +/-    1.26      19.5 +/-    1.26  0.070 / 0.140