PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-23:27:50
G01     51.0           26.1                9.9 +/-    0.95      18.8 +/-    0.95  0.090 / 0.110
G06     178.3          23.8               13.7 +/-    0.72      27.4 +/-    0.72  0.080 / 0.120
G07     146.1          13.8               13.5 +/-    3.17      34.6 +/-    3.17  0.040 / 0.070
G11     45.6           17.8                7.8 +/-    0.60      18.1 +/-    0.60  0.040 / 0.070
G13     252.1          30.9               11.8 +/-    1.69      20.4 +/-    1.69  0.040 / 0.040
G15     284.2          16.0                9.5 +/-    1.99      23.2 +/-    1.99  0.030 / 0.040
G17     290.4          77.2               10.4 +/-    0.42      10.7 +/-    0.42  0.120 / 0.420
G19     245.1          58.7               12.9 +/-    0.75      14.8 +/-    0.75  0.110 / 0.430
G28     51.7           53.0                9.1 +/-    0.59      11.0 +/-    0.59  0.090 / 0.270
G30     148.6          40.0               12.3 +/-    1.33      17.9 +/-    1.33  0.090 / 0.230