PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-23:43:00
G02     287.9          81.6               12.4 +/-    0.53      12.5 +/-    0.53  0.020 / 0.040
G05     167.3          25.0               19.4 +/-    1.20      38.0 +/-    1.20  0.020 / 0.040
G06     40.1           48.8               10.9 +/-    0.30      13.9 +/-    0.30  0.040 / 0.150
G12     320.0          61.8               11.8 +/-    0.89      13.2 +/-    0.89  0.100 / 0.140
G17     77.0           19.7               12.2 +/-    0.93      27.2 +/-    0.93  0.040 / 0.030
G19     65.0           34.4               11.7 +/-    0.72      18.7 +/-    0.72  0.030 / 0.030
G24     236.2          29.2               16.5 +/-    1.76      29.4 +/-    1.76  0.070 / 0.090
G25     317.7          19.4               11.3 +/-    1.99      25.3 +/-    1.99  0.070 / 0.100