PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-16:13:00
G03     210.2          58.4               11.0 +/-    0.74      12.6 +/-    0.74  0.150 / 0.350
G07     255.3          13.5               13.0 +/-    4.02      33.5 +/-    4.02  0.190 / 0.340
G09     309.1          25.8                9.2 +/-    1.54      17.7 +/-    1.54  0.080 / 0.060
G14     107.3          10.0               11.2 +/-    1.88      31.3 +/-    1.88  0.060 / 0.080
G16     98.9           64.1               10.3 +/-    0.66      11.3 +/-    0.66  0.030 / 0.050
G22     185.4          40.8               11.1 +/-    1.16      15.9 +/-    1.16  0.040 / 0.040
G23     332.9          61.4                9.4 +/-    0.91      10.5 +/-    0.91  0.110 / 0.240
G26     54.4           43.4               10.3 +/-    1.05      14.2 +/-    1.05  0.080 / 0.320
G31     58.7           10.2                8.9 +/-    3.46      24.8 +/-    3.46  0.050 / 0.040