PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-22:12:50
G01     108.2          25.0               14.5 +/-    1.07      28.2 +/-    1.07  0.050 / 0.100
G07     104.8          59.5               15.6 +/-    0.61      17.8 +/-    0.61  0.060 / 0.090
G08     42.6           24.8               11.6 +/-    1.33      22.7 +/-    1.33  0.080 / 0.150
G09     175.7          15.4               19.6 +/-    1.76      48.2 +/-    1.76  0.080 / 0.140
G11     93.9           43.3               14.5 +/-    0.56      20.0 +/-    0.56  0.030 / 0.040
G13     310.8          27.5               11.7 +/-    2.15      21.6 +/-    2.15  0.030 / 0.040
G17     206.4          33.6               16.7 +/-    2.30      27.1 +/-    2.30  0.040 / 0.060
G18     357.7          -16.0              19.7 +/-    1.09      47.7 +/-    1.09  0.040 / 0.060
G28     316.9          60.9               14.5 +/-    0.67      16.3 +/-    0.67  0.060 / 0.160
G30     33.8           77.8               14.4 +/-    0.70      14.7 +/-    0.70  0.070 / 0.190