PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-01:58:00
G02     200.3          27.1                8.3 +/-    2.03      15.4 +/-    2.03  0.050 / 0.080
G06     170.3          58.2                7.0 +/-    0.33       8.1 +/-    0.33  0.050 / 0.080
G17     23.4           58.3                6.2 +/-    1.06       7.1 +/-    1.06  0.040 / 0.040
G19     337.6          69.7                5.4 +/-    0.42       5.7 +/-    0.42  0.040 / 0.030
G24     307.1          32.3                4.3 +/-    2.44       7.2 +/-    2.44  0.030 / 0.030
G28     93.6           36.5                6.4 +/-    1.26      10.0 +/-    1.26  0.030 / 0.030