PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-03:27:50
G02     62.3           29.9                5.7 +/-    1.67      10.1 +/-    1.67  0.050 / 0.090
G05     54.1           57.4                5.8 +/-    0.44       6.8 +/-    0.44  0.040 / 0.110
G12     184.4          30.1                7.8 +/-    1.16      13.6 +/-    1.16  0.040 / 0.050
G13     126.5          16.8                8.4 +/-    1.42      19.9 +/-    1.42  0.030 / 0.040
G15     162.1          14.2                7.1 +/-    2.29      17.9 +/-    2.29  0.110 / 0.220
G20     218.5          25.3                9.7 +/-    2.05      18.7 +/-    2.05  0.100 / 0.210
G21     273.2          18.7                8.8 +/-    1.96      20.0 +/-    1.96  0.070 / 0.120
G25     234.6          50.3                8.7 +/-    1.23      10.9 +/-    1.23  0.050 / 0.110
G29     329.5          56.4                7.4 +/-    0.48       8.7 +/-    0.48  0.050 / 0.050