PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/28-00:57:50
G02     282.1          81.7                9.0 +/-    0.71       9.1 +/-    0.71  0.030 / 0.040
G05     167.7          24.0               14.1 +/-    1.79      28.3 +/-    1.79  0.040 / 0.040
G06     40.0           50.5                9.1 +/-    0.65      11.4 +/-    0.65  0.090 / 0.100
G12     320.4          59.9                9.6 +/-    1.62      10.9 +/-    1.62  0.060 / 0.110
G17     75.5           21.3                9.2 +/-    1.61      19.6 +/-    1.61  0.110 / 0.160
G19     64.1           34.8               10.4 +/-    0.77      16.6 +/-    0.77  0.140 / 0.160
G24     237.6          30.1               14.1 +/-    2.58      24.6 +/-    2.58  0.040 / 0.040
G25     317.7          18.2                7.9 +/-    1.68      18.3 +/-    1.68  0.040 / 0.040