PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-00:28:00
G02     345.7          78.7                8.1 +/-    0.85       8.2 +/-    0.85  0.030 / 0.040
G05     163.3          34.0               14.4 +/-    1.24      23.3 +/-    1.24  0.030 / 0.040
G06     41.6           40.1                6.4 +/-    0.47       9.3 +/-    0.47  0.030 / 0.040
G12     311.9          71.1                9.7 +/-    0.68      10.2 +/-    0.68  0.030 / 0.040
G17     84.5           14.6                9.3 +/-    2.05      23.5 +/-    2.05  0.070 / 0.090
G19     73.9           28.7                9.0 +/-    0.88      16.3 +/-    0.88  0.040 / 0.090
G24     228.6          23.0               15.0 +/-    1.93      30.8 +/-    1.93  0.080 / 0.160
G25     317.4          27.7                6.0 +/-    1.14      11.1 +/-    1.14  0.070 / 0.140