PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-05:28:00
G02     199.7          24.1                6.3 +/-    3.18      12.7 +/-    3.18  0.090 / 0.100
G06     174.8          52.6                5.6 +/-    0.64       6.9 +/-    0.64  0.070 / 0.100
G13     227.0          12.1                4.5 +/-    2.59      11.8 +/-    2.59  0.020 / 0.040
G17     23.3           58.9                3.5 +/-    0.57       4.1 +/-    0.57  0.040 / 0.070
G19     331.0          70.7                2.0 +/-    0.50       2.1 +/-    0.50  0.070 / 0.090
G24     309.7          29.8                2.1 +/-    0.82       3.8 +/-    0.82  0.080 / 0.110
G28     90.3           38.2                5.3 +/-    0.95       8.0 +/-    0.95  0.040 / 0.040
G30     156.3          10.5                6.1 +/-    2.77      16.9 +/-    2.77  0.040 / 0.040