PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/27-19:57:40
G01     293.7          39.4               13.1 +/-    5.19      19.3 +/-    5.19  0.060 / 0.080
G03     311.2          15.6                7.3 +/-    2.83      17.8 +/-    2.83  0.050 / 0.070
G10     117.9          31.0                9.9 +/-    0.71      16.9 +/-    0.71  0.060 / 0.140
G11     268.7          26.7               10.3 +/-    2.36      19.3 +/-    2.36  0.070 / 0.150
G14     20.5           60.1                7.9 +/-    1.14       9.0 +/-    1.14  0.030 / 0.020
G22     313.3          36.1                9.4 +/-    1.66      14.6 +/-    1.66  0.020 / 0.020
G25     69.1           18.8                8.4 +/-    1.81      19.0 +/-    1.81  0.050 / 0.050
G26     158.9          10.9               -1.6 +/-   42.07      -4.2 +/-   42.07  0.030 / 0.050
G31     146.1          77.2                9.9 +/-    0.52      10.1 +/-    0.52  0.040 / 0.050
G32     48.5           44.0                8.2 +/-    0.85      11.2 +/-    0.85  0.040 / 0.050