PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-18:58:00
G01     61.8           31.2               11.8 +/-    0.90      20.1 +/-    0.90  0.120 / 0.340
G07     141.6          24.1               14.3 +/-    1.63      28.6 +/-    1.63  0.120 / 0.400
G11     49.3           25.4               11.2 +/-    0.78      21.6 +/-    0.78  0.060 / 0.150
G13     264.6          35.8               15.0 +/-    1.24      23.4 +/-    1.24  0.060 / 0.180
G15     296.2          15.9               13.1 +/-    1.82      31.8 +/-    1.82  0.040 / 0.050
G17     249.6          72.9               14.8 +/-    0.50      15.4 +/-    0.50  0.040 / 0.060
G18     43.5           14.0                8.5 +/-    1.18      21.6 +/-    1.18  0.070 / 0.190
G19     230.8          47.4               13.0 +/-    0.99      16.9 +/-    0.99  0.060 / 0.210
G28     33.4           57.1               12.7 +/-    0.59      14.8 +/-    0.59  0.030 / 0.050
G30     142.5          53.5               14.9 +/-    1.48      18.0 +/-    1.48  0.030 / 0.040