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                1.9 +/-    0.30       1.9 +/-    0.30  0.140 / 0.200
G05     166.7          30.4                4.0 +/-    1.19       7.0 +/-    1.19  0.220 / 0.250
G06     40.4           43.8                1.7 +/-    1.21       2.4 +/-    1.21  0.030 / 0.020
G12     314.6          68.4                2.5 +/-    0.55       2.6 +/-    0.55  0.040 / 0.030
G17     85.4           10.3                2.0 +/-   10.21       5.4 +/-   10.21  0.080 / 0.110
G19     71.7           30.2                3.6 +/-    1.26       6.3 +/-    1.26  0.090 / 0.110
G24     225.5          22.9                5.1 +/-    3.96      10.4 +/-    3.96  0.060 / 0.040
G25     316.6          33.2                0.7 +/-    1.09       1.1 +/-    1.09  0.040 / 0.040