PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-00:28:00
G02     328.0          80.8                8.4 +/-    0.70       8.5 +/-    0.70  0.030 / 0.040
G05     164.9          30.4               14.4 +/-    1.69      25.1 +/-    1.69  0.020 / 0.040
G06     40.8           43.6                8.7 +/-    0.77      11.9 +/-    0.77  0.050 / 0.110
G12     316.4          67.3                7.1 +/-    0.83       7.6 +/-    0.83  0.060 / 0.100
G17     81.4           16.8               10.1 +/-    0.84      23.9 +/-    0.84  0.080 / 0.200
G19     70.5           30.9               10.9 +/-    0.47      18.7 +/-    0.47  0.110 / 0.150
G24     231.6          25.5               12.3 +/-    1.60      23.8 +/-    1.60  0.030 / 0.040
G25     317.8          24.3                7.4 +/-    2.36      14.7 +/-    2.36  0.040 / 0.030