PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-00:12:40
G01     107.5          25.4                7.5 +/-    0.87      14.6 +/-    0.87  0.040 / 0.060
G07     105.9          58.9                9.7 +/-    0.48      11.2 +/-    0.48  0.040 / 0.060
G08     42.3           22.9                6.1 +/-    1.26      12.4 +/-    1.26  0.080 / 0.080
G09     175.7          14.9               12.0 +/-    2.69      29.8 +/-    2.69  0.060 / 0.080
G11     93.5           43.4                8.9 +/-    0.66      12.2 +/-    0.66  0.080 / 0.130
G13     310.5          27.7                5.4 +/-    2.56       9.9 +/-    2.56  0.060 / 0.150
G17     206.3          35.8                9.9 +/-    1.61      15.6 +/-    1.61  0.030 / 0.030
G19     209.0          12.9                7.9 +/-    4.90      20.7 +/-    4.90  0.030 / 0.040
G28     318.4          61.1                7.5 +/-    0.76       8.5 +/-    0.76  0.040 / 0.070
G30     43.6           77.9                8.9 +/-    0.30       9.0 +/-    0.30  0.030 / 0.080