PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-05:27:50
G02     202.6          37.2                7.4 +/-    1.29      11.3 +/-    1.29  0.060 / 0.110
G06     167.0          67.4                6.4 +/-    0.32       6.9 +/-    0.32  0.070 / 0.120
G12     307.6          14.3                1.5 +/-    2.19       3.8 +/-    2.19  0.170 / 0.330
G17     36.1           49.3                3.3 +/-    1.36       4.2 +/-    1.36  0.050 / 0.240
G19     4.5            64.5                3.9 +/-    0.55       4.3 +/-    0.55  0.070 / 0.120
G24     298.3          37.7                2.5 +/-    2.68       3.8 +/-    2.68  0.080 / 0.070
G28     103.6          30.2                5.5 +/-    0.83       9.5 +/-    0.83  0.040 / 0.030