PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-09:28:00
G02     332.2          79.7                2.5 +/-    0.32       2.5 +/-    0.32  0.140 / 0.240
G05     166.7          30.4                4.5 +/-    1.00       7.9 +/-    1.00  0.110 / 0.180
G06     40.4           43.8                1.3 +/-    0.90       1.7 +/-    0.90  0.020 / 0.040
G12     314.6          68.4                1.3 +/-    0.68       1.4 +/-    0.68  0.040 / 0.030
G17     85.4           10.3                2.8 +/-    2.76       7.8 +/-    2.76  0.030 / 0.050
G19     71.7           30.2                3.7 +/-    1.01       6.4 +/-    1.01  0.040 / 0.060
G24     225.5          22.9                6.0 +/-    2.14      12.3 +/-    2.14  0.070 / 0.090
G25     316.6          33.2               15.5 +/-    1.44      25.4 +/-    1.44  0.100 / 0.090