PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-14:57:40
G03     217.5          64.9                9.7 +/-    0.65      10.6 +/-    0.65  0.090 / 0.310
G07     251.4          14.3                6.3 +/-    2.80      15.9 +/-    2.80  0.110 / 0.240
G09     304.9          19.8                5.7 +/-    0.83      12.6 +/-    0.83  0.050 / 0.050
G14     102.5          11.4               11.2 +/-    1.36      30.4 +/-    1.36  0.040 / 0.040
G16     128.7          60.2               12.1 +/-    0.48      13.7 +/-    0.48  0.110 / 0.220
G22     187.7          47.9               10.7 +/-    1.09      13.9 +/-    1.09  0.140 / 0.220
G23     321.8          51.7                8.0 +/-    0.84       9.8 +/-    0.84  0.150 / 0.390
G26     67.5           52.2                8.0 +/-    1.32       9.9 +/-    1.32  0.220 / 0.360
G31     53.9           17.8                7.7 +/-    2.28      17.8 +/-    2.28  0.040 / 0.050