PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/06-04:27:50
G01     110.1          23.7                6.0 +/-    1.81      12.2 +/-    1.81  0.040 / 0.030
G07     103.4          58.5                6.7 +/-    0.46       7.8 +/-    0.46  0.030 / 0.020
G08     41.8           20.6                2.9 +/-    0.60       6.3 +/-    0.60  0.060 / 0.180
G09     173.8          14.6                7.0 +/-    2.44      17.5 +/-    2.44  0.060 / 0.180
G11     91.0           42.4                6.5 +/-    0.35       9.1 +/-    0.35  0.040 / 0.060
G13     311.8          27.0                3.2 +/-    0.81       6.0 +/-    0.81  0.040 / 0.060
G17     203.4          37.2                6.4 +/-    1.43       9.8 +/-    1.43  0.030 / 0.040
G28     307.6          59.5                5.9 +/-    0.97       6.7 +/-    0.97  0.030 / 0.040
G30     4.4            75.6                5.7 +/-    0.68       5.9 +/-    0.68  0.060 / 0.080