PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-00:27:50
G01     50.0           25.4               10.0 +/-    2.12      19.3 +/-    2.12  0.090 / 0.110
G06     178.4          24.6               12.6 +/-    1.82      24.9 +/-    1.82  0.090 / 0.100
G07     146.4          12.7               11.6 +/-    2.27      30.5 +/-    2.27  0.020 / 0.030
G11     45.4           17.2                9.0 +/-    1.59      21.1 +/-    1.59  0.030 / 0.030
G13     250.9          30.2               12.4 +/-    1.36      21.7 +/-    1.36  0.100 / 0.130
G15     282.9          15.9                9.5 +/-    0.80      23.2 +/-    0.80  0.100 / 0.110
G17     300.2          77.7               11.4 +/-    0.65      11.6 +/-    0.65  0.040 / 0.050
G19     247.2          60.0               10.4 +/-    0.42      11.8 +/-    0.42  0.030 / 0.060
G28     53.6           52.4                9.4 +/-    1.17      11.5 +/-    1.17  0.100 / 0.160
G30     149.0          38.1               14.1 +/-    0.79      21.2 +/-    0.79  0.080 / 0.170