PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-15:12:50
G03     256.5          71.3               11.7 +/-    0.83      12.3 +/-    0.83  0.090 / 0.220
G09     298.1          11.4               -1.6 +/-   28.38      -4.5 +/-   28.38  0.080 / 0.220
G14     91.5           22.7                9.2 +/-    1.26      19.0 +/-    1.26  0.080 / 0.090
G16     137.9          52.4               12.9 +/-    0.54      15.8 +/-    0.54  0.050 / 0.060
G22     194.8          61.4               12.7 +/-    0.46      14.3 +/-    0.46  0.060 / 0.050
G23     315.5          46.0               11.6 +/-    0.70      15.5 +/-    0.70  0.050 / 0.050
G26     81.3           53.4               10.3 +/-    1.18      12.5 +/-    1.18  0.030 / 0.040
G31     48.7           24.6               10.0 +/-    1.54      19.7 +/-    1.54  0.030 / 0.040