PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-00:12:30
G02     319.8          81.3               11.7 +/-    0.62      11.8 +/-    0.62  0.030 / 0.030
G05     165.5          29.2               18.1 +/-    1.68      32.2 +/-    1.68  0.030 / 0.030
G06     40.6           44.7                9.7 +/-    0.77      13.1 +/-    0.77  0.090 / 0.100
G12     317.5          66.1               12.4 +/-    0.40      13.4 +/-    0.40  0.080 / 0.090
G17     80.5           17.4               10.9 +/-    1.89      25.5 +/-    1.89  0.220 / 0.270
G19     69.3           31.7               11.6 +/-    1.93      19.7 +/-    1.93  0.230 / 0.180
G24     232.5          26.4               16.3 +/-    1.61      30.9 +/-    1.61  0.040 / 0.040
G25     317.8          23.2                9.8 +/-    1.50      19.9 +/-    1.50  0.040 / 0.040