PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-19:27:50
G01     63.2           31.6               11.2 +/-    0.70      19.0 +/-    0.70  0.030 / 0.040
G07     141.0          25.3               14.5 +/-    0.83      28.2 +/-    0.83  0.040 / 0.040
G11     50.0           26.6               10.9 +/-    2.60      20.5 +/-    2.60  0.100 / 0.410
G13     266.2          36.1               15.3 +/-    1.61      23.7 +/-    1.61  0.090 / 0.410
G15     297.1          15.9               12.5 +/-    1.79      30.5 +/-    1.79  0.040 / 0.130
G17     245.8          71.6               14.1 +/-    1.09      14.8 +/-    1.09  0.040 / 0.130
G18     44.4           14.8                8.2 +/-    1.85      20.6 +/-    1.85  0.070 / 0.200
G19     229.7          46.5               14.1 +/-    0.83      18.6 +/-    0.83  0.070 / 0.180
G28     31.4           57.5               11.4 +/-    0.76      13.3 +/-    0.76  0.060 / 0.070
G30     141.5          54.5               11.7 +/-    1.00      14.1 +/-    1.00  0.040 / 0.060