PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-00:58:10
G02     272.7          81.2               10.1 +/-    0.61      10.2 +/-    0.61  0.050 / 0.030
G05     168.2          22.7               14.4 +/-    5.43      29.6 +/-    5.43  0.040 / 0.040
G06     40.0           51.9                9.9 +/-    0.75      12.2 +/-    0.75  0.040 / 0.030
G12     320.8          58.4               10.1 +/-    0.48      11.7 +/-    0.48  0.030 / 0.030
G17     74.3           22.1                9.9 +/-    1.49      20.7 +/-    1.49  0.110 / 0.150
G19     62.8           35.6                9.8 +/-    0.79      15.4 +/-    0.79  0.080 / 0.140
G24     238.9          31.0               11.5 +/-    2.13      19.7 +/-    2.13  0.120 / 0.120
G25     317.6          17.0                7.5 +/-    1.74      17.9 +/-    1.74  0.110 / 0.100