PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-13:57:40
G03     211.0          57.4               11.3 +/-    0.80      13.2 +/-    0.80  0.160 / 0.420
G07     256.8          14.7                7.7 +/-    1.69      19.2 +/-    1.69  0.230 / 0.440
G09     310.2          27.9                6.5 +/-    1.87      11.9 +/-    1.87  0.060 / 0.070
G14     108.3          9.9                10.9 +/-    2.24      30.4 +/-    2.24  0.090 / 0.080
G16     92.2           63.9               11.4 +/-    1.00      12.5 +/-    1.00  0.110 / 0.330
G22     184.7          38.6               11.2 +/-    0.85      16.7 +/-    0.85  0.060 / 0.220
G23     336.2          63.7               10.1 +/-    0.33      11.1 +/-    0.33  0.040 / 0.030
G26     52.6           41.6                9.2 +/-    1.22      13.1 +/-    1.22  0.040 / 0.040
G27     134.0          10.7                2.6 +/-   33.15       7.2 +/-   33.15  0.040 / 0.040