PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-21:28:10
G02     199.2          10.7                4.3 +/-   32.05      11.7 +/-   32.05  0.040 / 0.070
G06     176.1          39.5               18.3 +/-    1.26      26.8 +/-    1.26  0.040 / 0.070
G13     234.6          20.7               19.1 +/-    1.14      41.3 +/-    1.14  0.090 / 0.190
G15     267.7          11.4               13.6 +/-    2.38      36.8 +/-    2.38  0.080 / 0.200
G17     8.0            68.2               12.7 +/-    0.77      13.6 +/-    0.77  0.080 / 0.200
G19     285.1          70.5               12.8 +/-    0.64      13.5 +/-    0.64  0.090 / 0.200
G24     315.1          22.1                8.0 +/-    2.54      16.6 +/-    2.54  0.030 / 0.040
G28     70.5           48.9               11.2 +/-    1.03      14.3 +/-    1.03  0.040 / 0.040
G30     154.7          23.5               19.1 +/-    1.26      38.7 +/-    1.26  0.080 / 0.230