PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-15:12:30
G02     226.6          64.6                9.5 +/-    0.98      10.4 +/-    0.98  0.040 / 0.050
G06     43.8           64.2                7.7 +/-    0.42       8.5 +/-    0.42  0.040 / 0.030
G12     322.0          48.7                8.3 +/-    0.94      10.7 +/-    0.94  0.060 / 0.090
G17     65.9           25.3                8.4 +/-    2.16      16.2 +/-    2.16  0.060 / 0.080
G19     45.4           46.7                7.9 +/-    0.95      10.4 +/-    0.95  0.030 / 0.030
G24     250.1          38.3               10.6 +/-    1.48      15.8 +/-    1.48  0.030 / 0.030