PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-03:27:40
G01     38.3           11.2                3.4 +/-    3.56       9.2 +/-    3.56  0.040 / 0.050
G02     198.9          16.3                5.1 +/-    1.80      12.3 +/-    1.80  0.040 / 0.070
G06     175.6          44.8                5.8 +/-    0.91       7.9 +/-    0.91  0.100 / 0.080
G13     232.9          17.5                4.6 +/-    2.04      10.7 +/-    2.04  0.050 / 0.080
G17     10.9           65.9                2.2 +/-    0.64       2.4 +/-    0.64  0.050 / 0.040
G19     301.8          71.4                2.4 +/-    0.57       2.5 +/-    0.57  0.040 / 0.040
G24     314.2          24.0                1.3 +/-    4.06       2.6 +/-    4.06  0.170 / 0.250
G28     81.0           42.8                3.5 +/-    0.56       4.9 +/-    0.56  0.150 / 0.330
G30     154.8          16.9                4.2 +/-    2.42      10.0 +/-    2.42  0.140 / 0.210