PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-14:58:00
G02     230.2          67.2                8.1 +/-    0.78       8.7 +/-    0.78  0.040 / 0.040
G05     175.4          10.7               -4.3 +/-   17.98     -11.8 +/-   17.98  0.050 / 0.060
G06     42.3           61.8                7.9 +/-    0.47       8.8 +/-    0.47  0.040 / 0.030
G12     322.2          50.9                7.2 +/-    0.59       9.0 +/-    0.59  0.030 / 0.050
G17     68.0           23.7                8.0 +/-    1.62      16.1 +/-    1.62  0.110 / 0.260
G19     48.1           45.3                7.7 +/-    0.91      10.3 +/-    0.91  0.130 / 0.360
G24     247.1          37.1                8.0 +/-    0.98      12.2 +/-    0.98  0.050 / 0.040
G25     315.7          10.4              -16.8 +/-    9.29     -46.4 +/-    9.29  0.040 / 0.030