PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-18:12:50
G01     86.6           32.6               13.1 +/-    0.65      21.8 +/-    0.65  0.110 / 0.430
G07     128.2          43.2               14.9 +/-    1.20      20.7 +/-    1.20  0.090 / 0.290
G11     65.8           38.9               11.7 +/-    0.59      17.4 +/-    0.59  0.050 / 0.070
G13     291.0          36.8               13.9 +/-    0.95      21.3 +/-    0.95  0.040 / 0.060
G15     313.8          10.7                2.3 +/-   29.15       6.4 +/-   29.15  0.030 / 0.040
G17     217.4          54.1               14.6 +/-    1.26      17.5 +/-    1.26  0.030 / 0.040
G18     60.9           23.3               11.1 +/-    0.71      22.6 +/-    0.71  0.060 / 0.090
G19     216.3          28.2               14.5 +/-    1.30      26.3 +/-    1.30  0.060 / 0.090
G28     355.5          61.5               12.3 +/-    0.83      13.8 +/-    0.83  0.050 / 0.050
G30     113.9          73.3               14.6 +/-    0.30      15.1 +/-    0.30  0.050 / 0.050