PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-15:57:50
G03     197.2          39.5               12.2 +/-    0.94      17.9 +/-    0.94  0.030 / 0.040
G07     270.9          25.1               12.8 +/-    0.99      24.9 +/-    0.99  0.040 / 0.050
G08     157.6          10.0              -15.4 +/-   19.75     -43.0 +/-   19.75  0.150 / 0.330
G09     317.3          42.2               11.6 +/-    0.54      16.3 +/-    0.54  0.030 / 0.030
G16     56.8           56.2               12.6 +/-    0.48      14.9 +/-    0.48  0.030 / 0.080
G22     179.8          21.1               10.8 +/-    3.06      23.2 +/-    3.06  0.100 / 0.210
G23     10.7           77.8               11.5 +/-    1.44      11.8 +/-    1.44  0.130 / 0.190
G26     44.2           27.4                9.1 +/-    1.59      16.8 +/-    1.59  0.110 / 0.210
G27     120.2          22.3               11.8 +/-    1.10      24.7 +/-    1.10  0.170 / 0.280