PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-14:27:50
G02     85.7           10.9                4.9 +/-    4.36      13.4 +/-    4.36  0.060 / 0.080
G05     44.9           31.6                3.9 +/-    1.42       6.6 +/-    1.42  0.060 / 0.090
G13     98.5           34.2                6.9 +/-    1.12      11.2 +/-    1.12  0.040 / 0.040
G15     141.7          39.8                8.8 +/-    0.94      12.9 +/-    0.94  0.030 / 0.030
G18     232.6          30.4                5.9 +/-    1.77      10.3 +/-    1.77  0.110 / 0.180
G20     334.4          83.6                5.4 +/-    0.46       5.4 +/-    0.46  0.110 / 0.130
G21     301.3          40.9                4.7 +/-    2.83       6.7 +/-    2.83  0.060 / 0.100
G25     207.9          24.1                4.9 +/-    1.93       9.8 +/-    1.93  0.060 / 0.120
G26     306.3          17.4                2.8 +/-    2.59       6.5 +/-    2.59  0.170 / 0.110
G29     105.2          84.6                5.7 +/-    0.30       5.7 +/-    0.30  0.100 / 0.090